Closure and method of making the same



Jan. 15, 1929.

E. L. GREENEWALD- CLOSURE AND IIETHOD OF MAKING THE SAME Filed Feb. 19,1921 d OO Q 9 00 JNVENT OR; I I.

Patented Jan. 15, 1929.

UNITED STATES EUGENE L. GREENEWALD,

OF BROOKLYN, NEW YORK.

CLOSURE AND METHOD OF MAKING THE SAME.

Application filed February This invention relates to closures andmethods or making the same, and has particular reference to an improvedtwo-piece threaded closure and to the method of making it, but certainfeatures of the invention may be employed in connection with other typesof closures.

The principal object of this invention is to economically produce aclosure of the deep skirt or flan e type from sheet metal that has beendecorated, lacquered or enamelied in the sheet or fiat.

The above and other objects and the novel features of this inventionwill be apparent from the following description taken in connection withthe drawing which constitutes a part of this application and in whichFigs. 1 and 2 are plan and perspective views, respectively, of theblanks employed in making one form of the improved closure;

Fig. 3 is a central longitudinal sectional view illustrating the bodyblank and top blank assembled preparatory to uniting them;

Fig. 4: is a central longitudinal sectional View of a completed closureembodying this invention;

Fig. 5 is a transverse sectional view of the closure, taken on the line55 of Fig. 4; and

Fig. 6 is a view of another closure embodying principles of thisinvention, the view being partly in longitudinal section and partly inside elevation.

As shown, the closure is made of two pieces 35 of sheet metal, desirablyof thin gage, about No. 36 to No. 30 gage lacquered or enamelled on oneor both surfaces and provided with other decoration or advertising asdesired. The body blank B, which is formed into the 4.0 cylindricalbody, skirt or flange of the closure, is cut from suitable sheet metal,as described and is initially of substantially rectangular outline,desirably having integral tongues 10 and 11 at opposite ends thereof ealeaving cutout portions or notches, and par- Y allel longitudinal edges12 and 13 between such notches.

Before the blank B is formed into cylindrical shape, and desirably atthe same time that it is cut from the sheet, suitable means may beformed therein to provide the means for coupling the closure to acontainer when the same is completed. As shown, parallel rows of roundspot indentations I and I may be stamped or otherwise pressed into theblank 19, 1921. Serial No. 446,315.

B to produce rounded spot beads or projectrons projecting from one faceof the blank. The row of indentations I extends from a point adjacentthe longer edge 12 and short of the tongue 10 transversely of the sheetat an angle to the edge 12 and to'a point short of the tongue 11. Therow of indentations I is spaced from and parallel to the indentations Iand the indentations in the two rows may be staggered or not, asdesired. The size or the indentations and beads and the distance betweenthe rows and between the beads in each row, as well as the gage of themetal, are such that no substantial resistance will be offered to thebending of the blank into substantially true cylindrical form. In-

asmuch as the metal may be quite thin, i. e. from about 8 to 12thousandths of an inch, or thinner, and the indentations I and I do notextend a material distance longitudinally of the strip, they do notstiffen the metal and the blank may therefore be bent quite readily andaccurately.

At the same time that indentations I and I are formed in the blank B,other depressions E are also stamped or otherwise pressed into theblank. The depressions E may be of any desired shape and depth so as notto interfere with the bending of the blank and may project from eitherface of the blank, but for advantageous reasons they are narrow orelongated and form elongated ribs or beads projecting from the same faceof the sheet as the beads corresponding to the indentations I and I. Theindentations E are spaced apart and parallel to each other, and arearranged in a row that is parallel to and near the edge 13 of the blankand terminates short of the tongues 10 and 11. The arrangement andspacing of the indentations E and the corresponding ribs or beads issuch that they will not interfere with bending of the blank intocylindrical form and the upper rounded ends thereof substantiallyterminate in a line that passes through the edges 10 and 11 of thetongues 10 and 11.

The blank B is now bent into a cylindrical body by suitable mechanismand the tongues 10 and 11 are secured together and locked in a suitablemanner, as for example by an intertolded seam S, as indicated in Figure5, in which the raw metal edges are completely covered and concealed.The blank B is so bent that the rows of indentations or beads projectinwardly radially toward the axis of the a closure is to be coupled, therounded heads fitting in the groove of the thread on the receptacle. Thethread thus formed is an interrupted one but the beads are sufiicientlyclose together to {tilfild the frictional holding engagement for thepurpose desired.

The upper ends E of the ribs formed by indentations E provide aninterior shoulder djacent but below the upper circular end 13" of thebody B formed from the blank B. The top T maybe seated and held againstthis shoulder when it is united to the body B. As shown in Figs 2 and 3,the top blank T is circular and desirably cup-shaped, having a flangethat is or" substantially less width than the distance between theshoulder means E and the upper end 13 ot' the body B.

Referring to Figs. 3 and i, it will be noted that the upper edge 13otthe body is folded inwardly over and within the flange T of the topblank to cover and conceal its edge and the edge T" of the latter. Therounded upper ends E cooperate with the opposing edge of tie top toclamp the latter into place and hold ittightly. The central part of thetop blank may be crowned out so as to better co er and conceal the rawedge 13 of the body, and also to bring the enamelled or ornamentedsurface of the top flush with the upper end of the completed closure.The inward indentations E provide a circular knurled portion on theexterior of the closure which serves as a grip whereby the closure maybe more readily turned to screw the same onto and off of a receptacle.The lower edge of the body l may be rolled to form a bead, at 12, 4, toeliminate the sharp edge of metal and to conceal and cover the'raw metaledge thereat.

It will be understood that in some closures the body blank may bestamped with only the indentations E and a thread may be rolled orotherwise formed therein after the blank has been formed into acylinder; and in some closures the blank may be stamped with only theindentations l, l. and the indentations may be formed after the blankhe. formed into a cylinder, or they may be omitted. In the mo ificationshown in Fig.3. 6 the indentations have been omitted from the skirtportion and the top P initially consists of a fiat circular sheet metalblank, desirably lacquered or enamelled or decorated,

and is applied to the body B by corrugating and simultaneously bendingdown the peripheral portion p of the top to provide a corrugated flangeP which is bent inwardly under an exterior shoulder provided by a rolledhead 13 at the upper end of the body B. The cylindrical body B may bedepressed inwardly as at D so that the corrugated portion P maybedisposed in an annular depression and flush with the exterior of themain portion of the body l3 and also so that the raw edge of the topflange P may be covered and concealed. .lnasmuch as no interior shoulderis required in this term of closure and since the corrugations P providea suitable gripping surface, the indentations E are not formed in thebody blank of this closure. Otherwise the closure of Figure 6 is formedsimilarly to the one disclosed in Figs. 1 to 5 inclusive.

The invention is shown as embodied in a bottle cap adapted for use oncatsup bottles and'the like having screw threaded necks, but may also beembodied in other types of bottle and jar closures. While the blank Bshown is substantially fiat, it will be understood that the same mayinitially be given a suitable concavity or convexity by means of asuitably shaped punch and cooperating die and cutter which comprises themeans forming this blank.

The closures disclosed maybe made by other methods and other changes maybe made in the closures and methods disclosed without departingfrom thespirit of this invention or sacrificing any of the advantages thereof.

This application is a continuation in part of applications Serial No.22653 and Serial No. 89078, which have become Patents Nos. 1,405,112 and1,427,683, respectively.

I claim:

1. A two-piece closure comprising, in combination, a cylindrical bodyformed from a substantially rectangular sheet of metal having spotindentations therein adjacent one end thereof providing means forcoupling said closure to a receptacle, said body also having interiorshoulder means adjacent the other end thereof, and a top bearing againstsaid shoulder means and secured-to and closing said other end of saidbody.

2. A two-piece closure comprising, in combination, a cylindrical body"formed from a substantially rectangular sheetof metal having spotindentations therein adjacent one end thereof providing means forcoupling said closure to a receptacle, said body also having a circularrow of indentations providing interior shoulder means adjacent the otherend thereof, and a top bearing against said shoulder means and securedto and closing said other end of said body.

3. A two-piece closure comprising, in combination, a cylindrical bodyformed from a substantially rectangular sheet ot-Inetal having one ormore rows of spot indentations therein extending from adjacent a longerside thereof transversely of said sheet and providing helical threadlikemeans at one end of said body for coupling said closure to a threadedreceptacle, such sheet also having a row of indentations nearer theother longer edge thereof forming shoulder means adjacent the other endof said body, and a top bearing against said shoulder means and securedto and closing said other end of said body.

4. A two-piece closure comprising, in combination, a cylindrical bodyhaving ahelical row of inwardly projecting spaced spot indentationsextending from adjacent one end of said body toward the other endforming means for coupling said closure to a threaded receptacle, saidbody also having a circular row of inwardly projecting spacedindentations adjacent said other end thereof providing an interiorshoulder, and a top bearing against said shoulder and secured to andclosing said other end of said body.

5. A two-piece closure comprising, in combination, a cylindrical bodyformed from a rectangular sheet of metal having one or more rows of spotindentations extending transversely of said sheet from adjacent a longeredge thereof and forming a helical means on said body for coupling saidclosure to a threaded container, said sheet also having a row ofindentations nearer the other longer edge thereof and elongated parallelto the shorter edges of said sheet and arranged so as to form aninterior shoulder means on said body, said shorter edges beinginterlocked to unite the same and conceal the raw edges thereof, a topmember bearing against said shoulder means and having itscedgeinterlocked with the adjacent edge of said body to secure the top tosaid body and also conceal the contiguous raw edges of said top andbody, and a rolled bead formed of the lower end of said body to concealthe raw edge thereof.

6. The method of making a closure, recep tacle or the like, thatcomprises forming a substantially rectangular blank having a row ofindentations adapted to form shoulder means, forming said blank into acylindrical body with such indentations projecting inwardly to form suchshoulder means, and seating a top blank against such shoulder means andsecuring such top blank to said body.

7. The method of making closures that comprises forming a substantiallyrectangular blank having a row of indentations adapted to form shouldermeans and another row of indentations adapted to form helicalthread-like means, forming said blank into a cylindrical body with suchindentations projecting inwardly to form such shoulder means and suchhelical thread-like means, seating a top blank against such shouldermeans, and securing said top blank to said body.

8. The method of making a twopiece closure that comprises separatelyforming a circular top blank and a substantially rectangular body blank,forming in said body blank a row of spot indentations extendingtransversely thereof from adjacent one of its longer edges and anotherrow of indentations substantially parallel to and nearer the otherlonger edge of said body blank, forming said body blank into acylindrical body and uniting the shorter ends thereof whereby said spotindentations form a substantially helical thread-like means and saidother indentations form shoulder means and grip means, seating said topblank against said shoulder means, and securing said top blank to saidbody.

9. The method of making a closure that comprises separately forming asubstantially circular top blank and a substantially rectangular bodyblank, forming in said body blank a row of spaced spot indentations extending transversely thereof from adjacent one of its longer edges andanother row of spaced indentations substantially parallel to and nearerthe other longer edge of said body blank, all such indentationsproviding corresponding projections projecting from the same face ofsaid blank, forming said body blank into a cylindrical body with saidprojections extending inwardly, uniting the shorter edges of said blankwhereby said spot indentations form a substantially helical meansadapted to couple the closure to a threaded container and said otherindentations form interior shoulder means and exterior grip means onsaid body, seating said top blank against said shoulder means, andsecuring said top blank to said body.

10. The method of making a closure, receptacle or the like thatcomprises forming a substantially rectangular blank having a row ofindentations adjacent and substantially parallel to one edge thereofadapted to provide shoulder means, forming sai-d blank into a tubularbody with such indentations projecting inwardly to form such shouldermeans, forming a cup-shaped cover part having a flange, seating saidcover part against said shoulder means, and securing said cover part tosaid tubular part and concealing the contiguous edges of said flange andsaid body.

In testimony whereof, I afiix my signature.

EUGENE L. GREENEWALD.

